Collar for riveting heads



F. W. OTTMER COLLAR F OR RIVETING HEADS July 4, 1944.

Filed Jan. 9. 1943 INVENTOR FREDERICK W/LL/AM OTTMER Patented July 4, 1944 v V 2,352,733 COLLAR non R ver-11v Filed-55k W i tamer;lililiitfiiaiui; ic tion January 9, 1943,"Serial.N.o. 471,915 (G1; 73:13

4 Claims.

My invention relates to collars for riveting heads, more particularly to collars for insulating the shank of a riveting gun to prevent the heat accumulated from constant use from burning the operator, and has for its object to provide a collar that will fit snugly around the reduced neck of the shank under the head and be adaptable to expand at the reduced portion so that the collar can be slid over the enlarged head of the riveting gun and be easily removed.

A further object of my invention is to provide a collar that may be easily adjusted on and off the riveting gun head and one that will be a convenient hand grip so that the accumulated heat within the head will not be readily transferred to the hand of the operator.

A further object is to provide such a hand grip that is durable and economical to manufacture.

The foregoing and other features of my invention will now be described in connection with the accompanyingrdrawing forming part of this specification in which I have represented my collar for riveting heads in its preferred form after which I shall point out in the claims those features which I believe to be new and of my own invention.

In the drawing:

Figure 1 is a side view of my collar in position for mounting on the shank of a riveting gun.

Figure 2 is a side View showing my collar with the small end in its expanded position so that it may go over the head of the shank of the riveting gun, locking pin 30 being removed.

Figure 3 is the preferred shape of the blank of of material out of which my frustoconical annular collar is formed.

Figure 4 is a side view of a modification which I may employ when the annular collar is formed into a frustoconical ring.

Figure 5 is a modified form of the fastening devices which I may employ.

My invention is especially adapted for use on a riveting gun and is most desirable when the gun is continually used in driving rivets, where the vibrating head accumulates heat from contact with the hot rivets, for it may be used as a hand grip thereby protecting the hand of the operator by retarding the transfer of heat.

In the drawing Figure 1, I show a shank l I of a standard riveting gun having a riveting head 12 and a reduced portion or neck l3. In the carrying out of my invention I provide a frustoconical annular ring 2| having a larger diameter 22 that is larger than the diameter of the riveting head l2 and a smaller diameter 23 that is smaller than the head I2. On each edge 24 and 25 I provide means 26 to securely hold the edges together when the frustoconical collar is in place around the neck l3 of the riveting head I2.

I have illustrated my preferred form of holding means 25 as a standard wire belt lacing which is well known to the trade as carded belt lacing. In this form I provide a series of wire loops 28 extending beyond the edge 24 and a series of wire loops 29 extending :beyond the edge 25 of the material. When the edges 24 and 25 are brought together, these loops register and readily accommodate a holding pin 30 thereby holding the frustoconical member in its operating position.

On the larger end 22 I provide a nmber of punched holes 36 to provide an anchorage for a thong or wire 3'! by means of which the collar may be fastened to the riveting gun.

In Figure 2 I illustrate my collar 2| while being slipped over the head [2 after the small end 23 has passed over the head. The edges 24 and 25 are squeezed together until the loops 28 and 29 register, whereupon the pin 30 is inserted holding the collar firmly around the neck l3 of the riveting head.

In Figure 3 I show the preferred shape of the piece of leather or similar material out of which I hake my frustoconical collars.

Figure 4 shows the collar moulded out of heat resisting material without seam, the slot 42 being formed part way down the side. The edges of the slot 42 are provided with means 26 for looking the collar together when in place.

I may form my collar out of a simple piece of material and hold the edges 24 and 25 together so as to form the frustoconical shape of my collar by using buckles and straps as the means 26 of holding the collar in place on the neck 13 of the riveting head I2.

While I prefer to make my collar out of good heavy white oak leather similar to that used on soles of shoes, I may find that other material will be more suitable. It is necessary to have a material that does not readily transfer heat and it must be tough and sufiiciently substantial enough to withstand hard usage. I may also find it desirable to line the collar with a heat resisting material providing imitation leather or other inferior material is the only material available.

I wish it distinctly understood that my collar for riveting head herein above described and illustrated is in the form in which I desire to construct it and that changes or variations may be made as may be desirable without departing from the salient features of my invention and I therefore intend the following claims to cover such modifications as naturally fall Within the lines of invention.

I claim as my invention:

1. A collar for a riveting head having a reduced neck, comprising a substantially frustoconical annular member of flexible material having a smaller diameter smaller than the diameter of the riveting head, and a larger diameter, larger than the diameter of the riveting head, a slot part Way through the side of the annular member at the smaller end thereof, a series of loops fastened to both edges of the slot and extending beyond the edges thereof so that the loops overlap, a pin adapted to engage the overlapping loops thereby securely holding the edges of the slot together when the collar is secured in place on the neck of the riveting head.

2. A collar for a riveting head comprising substantially a frustoconical annular member formed out of a strip of leather, the opposing edges of the leather forming the conical annular member being provided with opposing loops fastened to the edges and extending beyond the edges thereof so that the loops overlap, a pin adapted to engage the overlapping loops so that the leather will be held in its annular shape.

3. The device of claim 2 including a lining of heat resisting material.

4. The device of claim 2 including a series of holes around the larger circumference of the annular member, means carried by the holes for securing the collar to the handle of the riveting gun.

FREDERICK WILLIAM OTTMER. 

